Eight new option listings on August 28th

New option listings for August 28th include VANGUARD ESG US CORPORATE BOND (VCEB), VANGUARD CORE BOND ETF (VCRB), VANGUARD CORE-PLUS BOND ETF (VPLS), VANGUARD CALIFORNIA TAX-EXEMPT (VTEC), VANGUARD INTERMEDIATE TAX-EXEMPT (VTEI), VANGUARD SHORT-TERM TAX-EXEMPT (VTES), VANGUARD ULTRA SHORT BOND ETF (VUSB), and Webtoon Entertainment Inc (WBTN).